junit-foundation-6.0.0

• Replace use of byte-buddy-maven-plugin with native Java agent implementation
• Implement atomic test watcher feature
• Add start/finish notifications to test class watcher
• Add support for "ignored" tests
• Move CreateTestClass implementation to its own file to avoid unintended JUnit class preloading
• Add tracking of associations between child objects (runners/methods) and their parent runners
• Revise tracking of associations between target objects and their owning TestClass objects
• Add public static methods to expose lifecycle object associations
• Add package-private reflection helpers to access private methods and fields
• Refactor method interceptors
• Add/update unit tests
• Add/update JavaDoc